Eccentric hinge for molding flasks



J. FISHER. ECCENTRIC HINGE FOR MOLDING FLASKS.

APPLICATION FILED FEB. 2| 1921.

Patented May 16, 1922..

w m vm in w. E r @b A lw 0J JOHN FISHER, OF LOS-ANGELES, CALIFORNIA.

,CCENTRC HINGE FOR HOLDING FLASKS.

. Specification otLetters Patent.

Patented May iti, i922.

Application ledlebruary 21,;1921. `Serial No. 446,792.

To all 'ui/0m t may concern Be it known that I, JOHN FISHER, a citizenof the United States, residing at Los Angeles, in the county et LosAngeles and State of California, have invented new and usefulImprovements in Eccentric Hinges for Molding Flasks, of which thefollowing is a specification.

This invention is a hinge connection for molding flasks and the like soarranged as to vary the aXis of the hinge connection, in order toproperly position the same with relation to the cope and drag of theflask, when the pattern plate is in position between the cope and dragas well as when the pattern plate has been removed. By the arrangementof such a hinge connection the cope and drag may be readily swung apartso as to permit removal of the pattern plate, and as readily swungtogether again in order to form the mold ready to receive the metal, andas a consequence there will be a great saving of time and energy.

The invention will be readily understood from the following descriptionof the accompanying drawings, in which- Figure l is a perspective viewof the cope of a mold having the improved hinge connection.

Fig. 2 is a similar view of the drag thereof.

Fig. 3 is a similar view showing the cope and drag in position with apattern plate between the same.

Fig. l is a side elevation ot' one of the hinge connections showing theposition of the same when the pattern plate is between the cope anddrag.

Fig. 5 is a similar view showing the position of the hinge connectionwhen the pattern plate is removed.

Fig. 6 is a longitudinal section on the line 6 6 ot Fig. t.

In the drawings I have shown the improved hinge connection as employedin connection with a molding flask including a usual cope 1 and a drag2, the latter being provided with upwardly projecting guide pinsco-operating with guide lugs 4f formeel upon the cope. A pattern plate 5is adapted to be received between the cope and the drag and is providedwith lugs 6 through which pins 3 are adapted to be received, so as to beengaged by guide lugs e and thus accurately position the cope, patternplate and drag relative to one another.

As an instance of this arrangement hinge 1 n n "A erackets 7 kareprovided upon one side of the Ycope and are provided with projectinghinge lugs 8 having upwardly extending bearing slots 9 in their ends.Hingebrackets l0 are provided upon the drag in alinement with bracket 7and are formed with projecting hinge lugs ll spaced from one another andhaving alined bearing apertures l2 in their ends. A bearing rod lll isjournalcd at its respective ends in the bearing lugs of the respectivehinges, and the portions of this rod between the bearing lugs ll of eachhinge form eccentric pintles l5 of reduced diameter and adapted to bereceived in the bearing slots 9 of hinge lugs 8.

By this arrangement it will be seen that rotation of the bearing rod lllwill canse a shitting ot the aXis of the hinge connection thus provided.In practice the parts are so arrangedthat the shifting olf the anis of'the hinge connection, which may be obtained, will be equal to thethickness of pattern plate 5 adapted to be received between the cope andthe drag. The hinge connection is adjusted so as to space the cope andthe drag, and when the pattern plate is in position, the cope may beswung open for removal of the plate. After the pattern plate has beenremoved, rod lll is rotated so as .to adjust the hinge connection andthereby cause the cope to lit tightly upon the drag when subsequentlyswung closed, in order to form the mold ready to receive the metal.

Rod ifi is adapted to be locked in its adjusted positions for varyingthe position of the axis ol: the hinge connection, an d tor this purposepins 1G extend from the respective ends of the rod at circumlferentiallyspaced points. Stops 17 project from the outside hinge lugs lll of therespect-ive hinge connections, and the pins 1G are so arranged that whenengaged by the respective adjacent stops the rod lll will be lockedagainst rotation in one or the other of' its adjusted positions.

ln order to provide for the engaging and disengaging ot the pins 1G andthe stops, the rod lll is preferably arranged for slight longitudinalmovement of the pins and stops and so positioned that when the rod isshitted in one direction axially7 one of the pins will be engaged bythis stop, while the opposite pin will have moved beyond its stop, andin similar manner when the rod is shift- 2. A molding ask comprising acope and drag having a hinge connection arranged for adjustment of theaxis thereof relative to the flask, and means for locking the hingeconnection in adjusted positions.

3. A molding flask comprising a cope and drag having hinge connectionseccentrically arranged so as to adjust the axis of said connection`relative to the flask, said eccentric adjustment including a pivot rodextending from one hinge connection to the other.

In testimony whereof l have signed my name to this specification.

JOHN FISHER.

